Answer:
Take one royal word in the plural and make it singular by adding one letter
It is a common and favored clothing material among biker gangs and superheroes.
What goes up let's of a load and come back down
Consuming food would be pretty tough without these chompers
What is something that can go up quite easily, but is not as easy to bring back down?
I touch the Earth, I touch the sky, but if I touch you, you’ll likely die. What am I?